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OF THE GEOLOGICAL SURVEY OF INDIA
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alignment alluvium appears Assistant associated average bands bank Bihar carried cent Circle clay coal consist contain covered deposits depth detailed direction district Division dolerite drilling dykes east eastern examined exposed extending fault feet field formations fossils further Garhwal geol geological Geologist gneisses Gondwana granite grey ground water half hill inches included India indicate industry jointed lignite limestone localities located Lower M.Sc Madhya Madras mapped material Messrs metall mica miles mineral mining occur pegmatites pits places portion Pradesh present production quantity quarry quartz quartzites recorded region reports reserves ridge river road rocks samples sand sandstones schists seen shales sheet soil square miles stage strike suitable surface Survey thick tion tons trap types Upper valley varies veins village yield zone